Last stand of the Ground Sloth Author R. K. Grater Article Date July 1958 Article Abstract Rampart Cave in the Lake Mead National Recreation Area section of the Grand Canyon Journal Title Ariz Hwys
Carbon, nitrogen and 15N content of fossil and modern dung from the lower Grand Canyon Author F. E. Clark Article Date October 1974 Article Abstract Analysis of sloth dung from Rampart Cave Journal Title J Ariz Acad Sci